7 ELECTRICALLY, PNEUMATICALLY OR HYDRAULICALLY OPERATED POWER TOOLS AND APPARATUS, NAMELY, GRINDING MACHINES FOR USE IN DEBURRING OF METAL PARTS, HYDRAULIC JACKS, HYDRAULIC HOISTERS FOR OTHER THAN CONSTRUCTION USE, ELECTRIC DRILLS, HYDRAULIC PUMPS, HYDRAULIC PRESSES, PNEUMATIC OR HYDRAULIC DRILLS FOR SETTING SCREWS OR CLIPS, DRILLING MACHINES, RIVETING MACHINES, CIRCULAR SAWS, JIGSAWS, ONSITE CEMENT MIXERS, AND HIGH-PRESSURE WASHERS